package com.cy.pj.goods.goods.service;

import com.cy.goods.dao.GoodsDao;
import com.cy.pj.goods.pojo.Goods;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class GoodsServiceImpl implements GoodsService{
    //获取一个日志对象(推荐使用slf4j-simple loging facade for java包中的日志对象-因为这是规范(Logger))(Logger是接口)
    private static final Logger log= //import org.slf4j.Logger; (支持log4j,logback)
            LoggerFactory.getLogger(GoodsServiceImpl.class);//import org.slf4j.LoggerFactory;
    @Autowired
    public GoodsDao goodsDao;
    @Override
    public List<Goods> findGoods(){
        long t1=System.currentTimeMillis();
       // System.out.println("start:"+t1);
        log.info("start:{}",t1);//这里的{}表示占位符
        List<Goods> list = goodsDao.findGoods();
        long t2=System.currentTimeMillis();
       // System.out.println("end:"+t2);
        log.info("end:{}",t2);
        System.out.println(t2-t1);
        return list;
    }

}
